I'm not getting power to my right brake light on my 1971 c10 my. Blinker works and running lights all work. But not the brake light. The left side works

2 Answers

Have you checked the bulb socket real good? With age they tend to get
greenish corrosion on the bulb contact points and in the wire harness
connections. Might have to just check the wire itself going to the socket
or harness connection to see if it is a socket or harness connection
issue. Check for power and ground.

I answered your earlier post here:
http://www.cargurus.com/Cars/Discussion-d1610_ds604385?
actionMessage
Make CERTAIN you are getting one break light but not the other and both
turn signals work! If so then I am afraid you need to replace the turn signal
switch on the steering column. I know this is counter-intuitive. See the other
thread for an explanation on why.

When park lights are on the signal indicators light up. When signals on the
indicators flash alternately inside (Dash lights are fine).
With lights one dash signals are still lit but dash lights go ...

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